Hype will not last long because it is going to fade and other projects will get the hype that you were once getting hence you shouldn't be depending on hype to invest into a project.
You can say that the hype starts the project, but the fundamentals keep the project going. The hype becomes part of the fundamentals. The hype for a project is good, but the bad side is that you can never know when a hype is organic or when it has been falsely and inorganically generated by the company behind the coin. That is why the hype is never really trusted, and most people investing in new projects based on hype are taking a gamble. If you are not comfortable investing in new projects based on hype, you can wait for the fundamentals.